./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec4_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec4_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 619b5b07f7bee6d460265c38ff6f46d0f3c88b87f6fc28a24021d9529c74e42f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:03:05,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:03:05,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:03:05,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:03:05,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:03:05,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:03:05,625 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:03:05,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:03:05,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:03:05,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:03:05,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:03:05,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:03:05,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:03:05,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:03:05,643 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:03:05,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:03:05,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:03:05,656 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:03:05,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:03:05,665 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:03:05,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:03:05,676 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:03:05,678 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:03:05,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:03:05,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:03:05,692 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:03:05,692 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:03:05,697 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:03:05,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:03:05,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:03:05,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:03:05,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:03:05,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:03:05,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:03:05,711 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:03:05,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:03:05,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:03:05,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:03:05,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:03:05,714 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:03:05,715 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:03:05,716 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-19 05:03:05,759 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:03:05,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:03:05,760 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:03:05,761 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:03:05,761 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:03:05,762 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:03:05,762 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:03:05,763 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:03:05,763 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:03:05,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:03:05,763 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:03:05,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:03:05,764 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:03:05,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:03:05,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 05:03:05,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:03:05,765 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 05:03:05,765 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:03:05,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 05:03:05,766 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:03:05,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 05:03:05,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:03:05,767 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:03:05,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:03:05,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:03:05,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:03:05,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:03:05,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 05:03:05,768 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:03:05,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 05:03:05,769 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 05:03:05,769 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 05:03:05,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 05:03:05,770 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:03:05,770 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 619b5b07f7bee6d460265c38ff6f46d0f3c88b87f6fc28a24021d9529c74e42f [2021-11-19 05:03:06,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:03:06,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:03:06,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:03:06,123 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:03:06,124 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:03:06,126 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/product-lines/email_spec4_product28.cil.c [2021-11-19 05:03:06,204 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/data/1247f4ce3/a621803e8c804413823b19cca69b5427/FLAG77915f18b [2021-11-19 05:03:06,905 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:03:06,906 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/sv-benchmarks/c/product-lines/email_spec4_product28.cil.c [2021-11-19 05:03:06,947 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/data/1247f4ce3/a621803e8c804413823b19cca69b5427/FLAG77915f18b [2021-11-19 05:03:07,061 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/data/1247f4ce3/a621803e8c804413823b19cca69b5427 [2021-11-19 05:03:07,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:03:07,068 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 05:03:07,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:03:07,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:03:07,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:03:07,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:03:07" (1/1) ... [2021-11-19 05:03:07,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b750fb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:07, skipping insertion in model container [2021-11-19 05:03:07,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:03:07" (1/1) ... [2021-11-19 05:03:07,090 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:03:07,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:03:07,545 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/sv-benchmarks/c/product-lines/email_spec4_product28.cil.c[8467,8480] [2021-11-19 05:03:07,961 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:03:07,983 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:03:08,022 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/sv-benchmarks/c/product-lines/email_spec4_product28.cil.c[8467,8480] [2021-11-19 05:03:08,147 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:03:08,234 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:03:08,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:08 WrapperNode [2021-11-19 05:03:08,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:03:08,236 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 05:03:08,236 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 05:03:08,236 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 05:03:08,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:08" (1/1) ... [2021-11-19 05:03:08,278 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:08" (1/1) ... [2021-11-19 05:03:08,345 INFO L137 Inliner]: procedures = 128, calls = 208, calls flagged for inlining = 55, calls inlined = 45, statements flattened = 854 [2021-11-19 05:03:08,345 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 05:03:08,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:03:08,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:03:08,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:03:08,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:08" (1/1) ... [2021-11-19 05:03:08,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:08" (1/1) ... [2021-11-19 05:03:08,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:08" (1/1) ... [2021-11-19 05:03:08,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:08" (1/1) ... [2021-11-19 05:03:08,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:08" (1/1) ... [2021-11-19 05:03:08,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:08" (1/1) ... [2021-11-19 05:03:08,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:08" (1/1) ... [2021-11-19 05:03:08,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:03:08,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:03:08,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:03:08,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:03:08,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:08" (1/1) ... [2021-11-19 05:03:08,476 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:03:08,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:03:08,513 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:03:08,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:03:08,574 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-19 05:03:08,574 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-19 05:03:08,575 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-19 05:03:08,575 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-19 05:03:08,575 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-19 05:03:08,575 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-19 05:03:08,575 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-19 05:03:08,576 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-19 05:03:08,576 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-19 05:03:08,577 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-19 05:03:08,577 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-19 05:03:08,577 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-19 05:03:08,577 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-19 05:03:08,577 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-19 05:03:08,577 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-19 05:03:08,578 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-19 05:03:08,578 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-19 05:03:08,578 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-19 05:03:08,578 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-19 05:03:08,578 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-19 05:03:08,579 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-19 05:03:08,579 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-19 05:03:08,579 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-19 05:03:08,579 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-19 05:03:08,579 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-19 05:03:08,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:03:08,580 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-19 05:03:08,580 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-19 05:03:08,580 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-19 05:03:08,580 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-19 05:03:08,580 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-19 05:03:08,581 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-19 05:03:08,581 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-19 05:03:08,581 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-19 05:03:08,581 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-19 05:03:08,581 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-19 05:03:08,581 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-19 05:03:08,582 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-19 05:03:08,582 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-19 05:03:08,582 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-19 05:03:08,582 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-19 05:03:08,582 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-19 05:03:08,583 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-19 05:03:08,583 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-19 05:03:08,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 05:03:08,583 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-19 05:03:08,583 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-19 05:03:08,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:03:08,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:03:08,785 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:03:08,787 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:03:09,664 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:03:09,677 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:03:09,677 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 05:03:09,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:03:09 BoogieIcfgContainer [2021-11-19 05:03:09,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:03:09,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:03:09,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:03:09,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:03:09,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:03:07" (1/3) ... [2021-11-19 05:03:09,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ffd96a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:03:09, skipping insertion in model container [2021-11-19 05:03:09,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:03:08" (2/3) ... [2021-11-19 05:03:09,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ffd96a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:03:09, skipping insertion in model container [2021-11-19 05:03:09,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:03:09" (3/3) ... [2021-11-19 05:03:09,693 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec4_product28.cil.c [2021-11-19 05:03:09,699 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:03:09,699 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 05:03:09,768 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:03:09,782 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 05:03:09,782 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 05:03:09,860 INFO L276 IsEmpty]: Start isEmpty. Operand has 327 states, 253 states have (on average 1.5217391304347827) internal successors, (385), 257 states have internal predecessors, (385), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2021-11-19 05:03:09,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-19 05:03:09,912 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:03:09,913 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:03:09,914 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:03:09,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:03:09,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1302958000, now seen corresponding path program 1 times [2021-11-19 05:03:09,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:03:09,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067384730] [2021-11-19 05:03:09,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:03:09,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:03:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:10,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:03:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:10,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:03:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:10,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:03:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:10,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-19 05:03:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:10,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-19 05:03:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:10,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-19 05:03:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:10,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-19 05:03:10,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:10,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-19 05:03:10,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:10,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-19 05:03:10,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:10,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-19 05:03:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:10,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-19 05:03:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:10,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-19 05:03:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:10,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-19 05:03:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:10,514 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-19 05:03:10,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:03:10,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067384730] [2021-11-19 05:03:10,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067384730] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:03:10,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688913249] [2021-11-19 05:03:10,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:03:10,519 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:03:10,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:03:10,528 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:03:10,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 05:03:10,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:10,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 05:03:10,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:03:11,207 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-19 05:03:11,207 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 05:03:11,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688913249] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:03:11,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 05:03:11,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2021-11-19 05:03:11,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194372022] [2021-11-19 05:03:11,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:03:11,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 05:03:11,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:03:11,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 05:03:11,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:03:11,271 INFO L87 Difference]: Start difference. First operand has 327 states, 253 states have (on average 1.5217391304347827) internal successors, (385), 257 states have internal predecessors, (385), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 05:03:11,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:03:11,382 INFO L93 Difference]: Finished difference Result 505 states and 732 transitions. [2021-11-19 05:03:11,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:03:11,384 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 104 [2021-11-19 05:03:11,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:03:11,423 INFO L225 Difference]: With dead ends: 505 [2021-11-19 05:03:11,424 INFO L226 Difference]: Without dead ends: 320 [2021-11-19 05:03:11,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:03:11,438 INFO L933 BasicCegarLoop]: 481 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:03:11,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:03:11,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-11-19 05:03:11,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2021-11-19 05:03:11,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 247 states have (on average 1.51417004048583) internal successors, (374), 250 states have internal predecessors, (374), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-11-19 05:03:11,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 473 transitions. [2021-11-19 05:03:11,558 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 473 transitions. Word has length 104 [2021-11-19 05:03:11,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:03:11,560 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 473 transitions. [2021-11-19 05:03:11,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 05:03:11,561 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 473 transitions. [2021-11-19 05:03:11,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-19 05:03:11,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:03:11,568 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:03:11,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 05:03:11,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:03:11,796 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:03:11,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:03:11,797 INFO L85 PathProgramCache]: Analyzing trace with hash 598678511, now seen corresponding path program 1 times [2021-11-19 05:03:11,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:03:11,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564852311] [2021-11-19 05:03:11,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:03:11,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:03:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:11,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:03:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:11,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:03:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:11,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:03:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:11,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-19 05:03:11,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:12,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-19 05:03:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:12,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-19 05:03:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:12,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-19 05:03:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:12,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-19 05:03:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:12,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-19 05:03:12,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:12,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-19 05:03:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:12,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-19 05:03:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:12,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-19 05:03:12,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:12,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-19 05:03:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:12,119 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-19 05:03:12,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:03:12,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564852311] [2021-11-19 05:03:12,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564852311] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:03:12,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662912664] [2021-11-19 05:03:12,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:03:12,124 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:03:12,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:03:12,128 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:03:12,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 05:03:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:12,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 05:03:12,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:03:12,805 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-19 05:03:12,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 05:03:12,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662912664] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:03:12,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 05:03:12,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-11-19 05:03:12,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830202936] [2021-11-19 05:03:12,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:03:12,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:03:12,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:03:12,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:03:12,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:03:12,810 INFO L87 Difference]: Start difference. First operand 320 states and 473 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 05:03:12,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:03:12,874 INFO L93 Difference]: Finished difference Result 495 states and 713 transitions. [2021-11-19 05:03:12,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:03:12,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 105 [2021-11-19 05:03:12,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:03:12,881 INFO L225 Difference]: With dead ends: 495 [2021-11-19 05:03:12,882 INFO L226 Difference]: Without dead ends: 323 [2021-11-19 05:03:12,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:03:12,891 INFO L933 BasicCegarLoop]: 471 mSDtfsCounter, 1 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:03:12,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 940 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:03:12,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-11-19 05:03:12,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 322. [2021-11-19 05:03:12,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 249 states have (on average 1.5100401606425702) internal successors, (376), 252 states have internal predecessors, (376), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-11-19 05:03:12,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 475 transitions. [2021-11-19 05:03:12,957 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 475 transitions. Word has length 105 [2021-11-19 05:03:12,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:03:12,960 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 475 transitions. [2021-11-19 05:03:12,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 05:03:12,960 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 475 transitions. [2021-11-19 05:03:12,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 05:03:12,963 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:03:12,964 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:03:12,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 05:03:13,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:03:13,165 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:03:13,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:03:13,166 INFO L85 PathProgramCache]: Analyzing trace with hash 120398534, now seen corresponding path program 1 times [2021-11-19 05:03:13,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:03:13,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750114541] [2021-11-19 05:03:13,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:03:13,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:03:13,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:13,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:03:13,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:13,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:03:13,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:13,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:03:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:13,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-19 05:03:13,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:13,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-19 05:03:13,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:13,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-19 05:03:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:13,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-19 05:03:13,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:13,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-19 05:03:13,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:13,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-19 05:03:13,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:13,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-19 05:03:13,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:13,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-19 05:03:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:13,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-19 05:03:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:13,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-19 05:03:13,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:13,422 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-19 05:03:13,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:03:13,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750114541] [2021-11-19 05:03:13,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750114541] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:03:13,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946141914] [2021-11-19 05:03:13,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:03:13,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:03:13,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:03:13,427 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:03:13,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 05:03:13,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:13,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 1031 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:03:13,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:03:13,974 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-19 05:03:13,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 05:03:13,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946141914] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:03:13,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 05:03:13,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-11-19 05:03:13,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831075603] [2021-11-19 05:03:13,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:03:13,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:03:13,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:03:13,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:03:13,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:03:13,980 INFO L87 Difference]: Start difference. First operand 322 states and 475 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 05:03:14,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:03:14,038 INFO L93 Difference]: Finished difference Result 669 states and 1001 transitions. [2021-11-19 05:03:14,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:03:14,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 111 [2021-11-19 05:03:14,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:03:14,047 INFO L225 Difference]: With dead ends: 669 [2021-11-19 05:03:14,047 INFO L226 Difference]: Without dead ends: 374 [2021-11-19 05:03:14,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:03:14,053 INFO L933 BasicCegarLoop]: 492 mSDtfsCounter, 99 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:03:14,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 919 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:03:14,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-19 05:03:14,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 366. [2021-11-19 05:03:14,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 282 states have (on average 1.524822695035461) internal successors, (430), 285 states have internal predecessors, (430), 61 states have call successors, (61), 22 states have call predecessors, (61), 22 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2021-11-19 05:03:14,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 551 transitions. [2021-11-19 05:03:14,120 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 551 transitions. Word has length 111 [2021-11-19 05:03:14,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:03:14,121 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 551 transitions. [2021-11-19 05:03:14,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 05:03:14,122 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 551 transitions. [2021-11-19 05:03:14,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 05:03:14,127 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:03:14,128 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:03:14,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-19 05:03:14,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:03:14,340 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:03:14,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:03:14,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1427798971, now seen corresponding path program 1 times [2021-11-19 05:03:14,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:03:14,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97957397] [2021-11-19 05:03:14,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:03:14,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:03:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:14,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:03:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:14,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:03:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:14,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:03:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:14,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-19 05:03:14,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:14,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-19 05:03:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:14,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-19 05:03:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:14,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-19 05:03:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:14,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-19 05:03:14,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:14,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-19 05:03:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:14,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-19 05:03:14,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:14,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-19 05:03:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:14,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-19 05:03:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:14,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-19 05:03:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:14,523 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-19 05:03:14,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:03:14,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97957397] [2021-11-19 05:03:14,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97957397] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:03:14,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714552119] [2021-11-19 05:03:14,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:03:14,525 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:03:14,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:03:14,532 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:03:14,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-19 05:03:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:14,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 05:03:14,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:03:15,121 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 05:03:15,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 05:03:15,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714552119] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:03:15,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 05:03:15,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2021-11-19 05:03:15,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953083744] [2021-11-19 05:03:15,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:03:15,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:03:15,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:03:15,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:03:15,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-19 05:03:15,128 INFO L87 Difference]: Start difference. First operand 366 states and 551 transitions. Second operand has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-19 05:03:15,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:03:15,226 INFO L93 Difference]: Finished difference Result 723 states and 1092 transitions. [2021-11-19 05:03:15,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:03:15,231 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 112 [2021-11-19 05:03:15,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:03:15,236 INFO L225 Difference]: With dead ends: 723 [2021-11-19 05:03:15,236 INFO L226 Difference]: Without dead ends: 368 [2021-11-19 05:03:15,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-19 05:03:15,242 INFO L933 BasicCegarLoop]: 464 mSDtfsCounter, 117 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:03:15,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 1720 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:03:15,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2021-11-19 05:03:15,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2021-11-19 05:03:15,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 283 states have (on average 1.5229681978798586) internal successors, (431), 287 states have internal predecessors, (431), 61 states have call successors, (61), 22 states have call predecessors, (61), 23 states have return successors, (62), 60 states have call predecessors, (62), 60 states have call successors, (62) [2021-11-19 05:03:15,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 554 transitions. [2021-11-19 05:03:15,274 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 554 transitions. Word has length 112 [2021-11-19 05:03:15,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:03:15,275 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 554 transitions. [2021-11-19 05:03:15,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-19 05:03:15,275 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 554 transitions. [2021-11-19 05:03:15,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 05:03:15,279 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:03:15,279 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:03:15,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-19 05:03:15,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:03:15,488 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:03:15,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:03:15,488 INFO L85 PathProgramCache]: Analyzing trace with hash -221648282, now seen corresponding path program 1 times [2021-11-19 05:03:15,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:03:15,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137908861] [2021-11-19 05:03:15,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:03:15,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:03:15,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:15,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:03:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:15,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:03:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:15,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:03:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:15,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-19 05:03:15,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:15,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-19 05:03:15,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:15,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-11-19 05:03:15,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:15,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-19 05:03:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:15,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-19 05:03:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:15,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-19 05:03:15,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:15,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-19 05:03:15,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:15,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-19 05:03:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:15,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-19 05:03:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:15,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-19 05:03:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:15,661 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-19 05:03:15,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:03:15,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137908861] [2021-11-19 05:03:15,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137908861] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:03:15,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542696779] [2021-11-19 05:03:15,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:03:15,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:03:15,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:03:15,668 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:03:15,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-19 05:03:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:15,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 1039 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 05:03:15,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:03:16,179 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 05:03:16,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 05:03:16,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542696779] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:03:16,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 05:03:16,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2021-11-19 05:03:16,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930066975] [2021-11-19 05:03:16,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:03:16,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:03:16,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:03:16,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:03:16,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-19 05:03:16,183 INFO L87 Difference]: Start difference. First operand 368 states and 554 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-19 05:03:16,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:03:16,271 INFO L93 Difference]: Finished difference Result 725 states and 1097 transitions. [2021-11-19 05:03:16,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:03:16,272 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2021-11-19 05:03:16,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:03:16,276 INFO L225 Difference]: With dead ends: 725 [2021-11-19 05:03:16,277 INFO L226 Difference]: Without dead ends: 370 [2021-11-19 05:03:16,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-11-19 05:03:16,280 INFO L933 BasicCegarLoop]: 462 mSDtfsCounter, 116 mSDsluCounter, 1247 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:03:16,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 1709 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:03:16,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-11-19 05:03:16,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2021-11-19 05:03:16,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 284 states have (on average 1.5211267605633803) internal successors, (432), 289 states have internal predecessors, (432), 61 states have call successors, (61), 22 states have call predecessors, (61), 24 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2021-11-19 05:03:16,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 560 transitions. [2021-11-19 05:03:16,317 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 560 transitions. Word has length 113 [2021-11-19 05:03:16,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:03:16,321 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 560 transitions. [2021-11-19 05:03:16,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-19 05:03:16,322 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 560 transitions. [2021-11-19 05:03:16,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 05:03:16,327 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:03:16,327 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:03:16,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-19 05:03:16,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:03:16,552 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:03:16,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:03:16,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1645047527, now seen corresponding path program 1 times [2021-11-19 05:03:16,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:03:16,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325575314] [2021-11-19 05:03:16,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:03:16,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:03:16,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:16,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:03:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:16,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:03:16,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:16,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:03:16,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:16,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-19 05:03:16,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:16,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-19 05:03:16,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:16,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-19 05:03:16,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:16,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-19 05:03:16,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:16,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-19 05:03:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:16,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-19 05:03:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:16,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-19 05:03:16,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:16,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-19 05:03:16,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:16,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-19 05:03:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:16,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-19 05:03:16,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:16,706 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-19 05:03:16,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:03:16,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325575314] [2021-11-19 05:03:16,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325575314] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:03:16,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:03:16,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 05:03:16,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725744586] [2021-11-19 05:03:16,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:03:16,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 05:03:16,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:03:16,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 05:03:16,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:03:16,710 INFO L87 Difference]: Start difference. First operand 370 states and 560 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-19 05:03:18,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:03:18,184 INFO L93 Difference]: Finished difference Result 788 states and 1199 transitions. [2021-11-19 05:03:18,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 05:03:18,185 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2021-11-19 05:03:18,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:03:18,190 INFO L225 Difference]: With dead ends: 788 [2021-11-19 05:03:18,190 INFO L226 Difference]: Without dead ends: 441 [2021-11-19 05:03:18,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-11-19 05:03:18,193 INFO L933 BasicCegarLoop]: 512 mSDtfsCounter, 871 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 1361 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 1356 SdHoareTripleChecker+Invalid, 1631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 1361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:03:18,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [888 Valid, 1356 Invalid, 1631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 1361 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 05:03:18,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2021-11-19 05:03:18,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 370. [2021-11-19 05:03:18,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 284 states have (on average 1.5211267605633803) internal successors, (432), 289 states have internal predecessors, (432), 61 states have call successors, (61), 22 states have call predecessors, (61), 24 states have return successors, (66), 60 states have call predecessors, (66), 60 states have call successors, (66) [2021-11-19 05:03:18,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 559 transitions. [2021-11-19 05:03:18,230 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 559 transitions. Word has length 114 [2021-11-19 05:03:18,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:03:18,231 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 559 transitions. [2021-11-19 05:03:18,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-19 05:03:18,231 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 559 transitions. [2021-11-19 05:03:18,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-19 05:03:18,234 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:03:18,235 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:03:18,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 05:03:18,235 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:03:18,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:03:18,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1269941286, now seen corresponding path program 2 times [2021-11-19 05:03:18,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:03:18,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816034481] [2021-11-19 05:03:18,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:03:18,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:03:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:18,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:03:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:18,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:03:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:18,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:03:18,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:18,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-19 05:03:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:18,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-19 05:03:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:18,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-19 05:03:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:18,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-19 05:03:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:18,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-19 05:03:18,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:18,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-19 05:03:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:18,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-19 05:03:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:18,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-19 05:03:18,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:18,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-19 05:03:18,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:18,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-19 05:03:18,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:18,401 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-19 05:03:18,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:03:18,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816034481] [2021-11-19 05:03:18,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816034481] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:03:18,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:03:18,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 05:03:18,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945480183] [2021-11-19 05:03:18,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:03:18,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 05:03:18,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:03:18,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 05:03:18,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:03:18,405 INFO L87 Difference]: Start difference. First operand 370 states and 559 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-19 05:03:19,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:03:19,901 INFO L93 Difference]: Finished difference Result 790 states and 1202 transitions. [2021-11-19 05:03:19,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 05:03:19,902 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2021-11-19 05:03:19,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:03:19,907 INFO L225 Difference]: With dead ends: 790 [2021-11-19 05:03:19,907 INFO L226 Difference]: Without dead ends: 443 [2021-11-19 05:03:19,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-11-19 05:03:19,910 INFO L933 BasicCegarLoop]: 513 mSDtfsCounter, 867 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 1366 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 1638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 1366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:03:19,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [884 Valid, 1357 Invalid, 1638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 1366 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 05:03:19,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-11-19 05:03:19,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 372. [2021-11-19 05:03:19,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 285 states have (on average 1.5192982456140351) internal successors, (433), 291 states have internal predecessors, (433), 61 states have call successors, (61), 22 states have call predecessors, (61), 25 states have return successors, (68), 60 states have call predecessors, (68), 60 states have call successors, (68) [2021-11-19 05:03:19,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 562 transitions. [2021-11-19 05:03:19,965 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 562 transitions. Word has length 115 [2021-11-19 05:03:19,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:03:19,966 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 562 transitions. [2021-11-19 05:03:19,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-19 05:03:19,966 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 562 transitions. [2021-11-19 05:03:19,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-19 05:03:19,969 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:03:19,970 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:03:19,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 05:03:19,970 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:03:19,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:03:19,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1415974892, now seen corresponding path program 1 times [2021-11-19 05:03:19,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:03:19,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858737084] [2021-11-19 05:03:19,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:03:19,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:03:20,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:20,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:03:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:20,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:03:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:20,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:03:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:20,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-19 05:03:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:20,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-19 05:03:20,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:20,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-19 05:03:20,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:20,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-19 05:03:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:20,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-19 05:03:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:20,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-19 05:03:20,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:20,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-19 05:03:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:20,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-19 05:03:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:20,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-19 05:03:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:20,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-19 05:03:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:20,187 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-19 05:03:20,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:03:20,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858737084] [2021-11-19 05:03:20,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858737084] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:03:20,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:03:20,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 05:03:20,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742222802] [2021-11-19 05:03:20,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:03:20,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 05:03:20,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:03:20,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 05:03:20,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-11-19 05:03:20,190 INFO L87 Difference]: Start difference. First operand 372 states and 562 transitions. Second operand has 11 states, 10 states have (on average 7.7) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 05:03:22,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:03:22,267 INFO L93 Difference]: Finished difference Result 788 states and 1197 transitions. [2021-11-19 05:03:22,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 05:03:22,268 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.7) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 116 [2021-11-19 05:03:22,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:03:22,272 INFO L225 Difference]: With dead ends: 788 [2021-11-19 05:03:22,272 INFO L226 Difference]: Without dead ends: 443 [2021-11-19 05:03:22,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-11-19 05:03:22,275 INFO L933 BasicCegarLoop]: 499 mSDtfsCounter, 973 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 2561 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 2879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 2561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:03:22,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [973 Valid, 1784 Invalid, 2879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 2561 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-19 05:03:22,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-11-19 05:03:22,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 372. [2021-11-19 05:03:22,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 285 states have (on average 1.5192982456140351) internal successors, (433), 291 states have internal predecessors, (433), 61 states have call successors, (61), 22 states have call predecessors, (61), 25 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2021-11-19 05:03:22,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 561 transitions. [2021-11-19 05:03:22,312 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 561 transitions. Word has length 116 [2021-11-19 05:03:22,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:03:22,313 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 561 transitions. [2021-11-19 05:03:22,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.7) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 05:03:22,313 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 561 transitions. [2021-11-19 05:03:22,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-19 05:03:22,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:03:22,317 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:03:22,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-19 05:03:22,318 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:03:22,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:03:22,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1004440397, now seen corresponding path program 2 times [2021-11-19 05:03:22,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:03:22,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96532696] [2021-11-19 05:03:22,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:03:22,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:03:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:22,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:03:22,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:22,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:03:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:22,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:03:22,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:22,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-19 05:03:22,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:22,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-19 05:03:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:22,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-19 05:03:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:22,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-19 05:03:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:22,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-19 05:03:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:22,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-19 05:03:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:22,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-19 05:03:22,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:22,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-19 05:03:22,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:22,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-19 05:03:22,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:22,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-19 05:03:22,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:22,480 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-19 05:03:22,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:03:22,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96532696] [2021-11-19 05:03:22,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96532696] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:03:22,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:03:22,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 05:03:22,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293408481] [2021-11-19 05:03:22,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:03:22,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 05:03:22,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:03:22,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 05:03:22,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-11-19 05:03:22,484 INFO L87 Difference]: Start difference. First operand 372 states and 561 transitions. Second operand has 11 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 05:03:24,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:03:24,406 INFO L93 Difference]: Finished difference Result 790 states and 1203 transitions. [2021-11-19 05:03:24,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 05:03:24,407 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 117 [2021-11-19 05:03:24,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:03:24,411 INFO L225 Difference]: With dead ends: 790 [2021-11-19 05:03:24,411 INFO L226 Difference]: Without dead ends: 445 [2021-11-19 05:03:24,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-11-19 05:03:24,414 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 969 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 2592 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 2906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 2592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-19 05:03:24,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [969 Valid, 1785 Invalid, 2906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 2592 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-19 05:03:24,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2021-11-19 05:03:24,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 374. [2021-11-19 05:03:24,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 286 states have (on average 1.5174825174825175) internal successors, (434), 293 states have internal predecessors, (434), 61 states have call successors, (61), 22 states have call predecessors, (61), 26 states have return successors, (72), 60 states have call predecessors, (72), 60 states have call successors, (72) [2021-11-19 05:03:24,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 567 transitions. [2021-11-19 05:03:24,447 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 567 transitions. Word has length 117 [2021-11-19 05:03:24,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:03:24,448 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 567 transitions. [2021-11-19 05:03:24,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 05:03:24,448 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 567 transitions. [2021-11-19 05:03:24,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-19 05:03:24,451 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:03:24,451 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:03:24,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-19 05:03:24,452 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:03:24,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:03:24,452 INFO L85 PathProgramCache]: Analyzing trace with hash 945960143, now seen corresponding path program 1 times [2021-11-19 05:03:24,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:03:24,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888813051] [2021-11-19 05:03:24,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:03:24,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:03:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:24,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:03:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:24,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:03:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:24,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:03:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:24,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-19 05:03:24,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:24,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-19 05:03:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:24,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-19 05:03:24,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:24,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-19 05:03:24,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:24,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-19 05:03:24,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:24,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-19 05:03:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:24,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-19 05:03:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:24,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-19 05:03:24,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:24,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-19 05:03:24,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:24,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-19 05:03:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:24,571 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-19 05:03:24,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:03:24,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888813051] [2021-11-19 05:03:24,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888813051] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:03:24,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507665286] [2021-11-19 05:03:24,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:03:24,572 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:03:24,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:03:24,576 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:03:24,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-19 05:03:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:24,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 1044 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:03:24,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:03:25,059 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-19 05:03:25,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:03:25,334 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-19 05:03:25,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507665286] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:03:25,335 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:03:25,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2021-11-19 05:03:25,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101088758] [2021-11-19 05:03:25,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:03:25,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 05:03:25,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:03:25,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 05:03:25,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:03:25,337 INFO L87 Difference]: Start difference. First operand 374 states and 567 transitions. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 05:03:26,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:03:26,835 INFO L93 Difference]: Finished difference Result 944 states and 1501 transitions. [2021-11-19 05:03:26,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 05:03:26,835 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 118 [2021-11-19 05:03:26,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:03:26,842 INFO L225 Difference]: With dead ends: 944 [2021-11-19 05:03:26,842 INFO L226 Difference]: Without dead ends: 772 [2021-11-19 05:03:26,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-11-19 05:03:26,845 INFO L933 BasicCegarLoop]: 601 mSDtfsCounter, 1062 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 1583 mSolverCounterSat, 371 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 1954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 371 IncrementalHoareTripleChecker+Valid, 1583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:03:26,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1107 Valid, 1780 Invalid, 1954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [371 Valid, 1583 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 05:03:26,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2021-11-19 05:03:26,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 677. [2021-11-19 05:03:26,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 525 states have (on average 1.5847619047619048) internal successors, (832), 532 states have internal predecessors, (832), 125 states have call successors, (125), 22 states have call predecessors, (125), 26 states have return successors, (146), 124 states have call predecessors, (146), 124 states have call successors, (146) [2021-11-19 05:03:26,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1103 transitions. [2021-11-19 05:03:26,899 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1103 transitions. Word has length 118 [2021-11-19 05:03:26,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:03:26,900 INFO L470 AbstractCegarLoop]: Abstraction has 677 states and 1103 transitions. [2021-11-19 05:03:26,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 05:03:26,901 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1103 transitions. [2021-11-19 05:03:26,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-19 05:03:26,906 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:03:26,906 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:03:26,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-19 05:03:27,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65b74a76-ec19-49ff-a965-2bd2f75db55f/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:03:27,128 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:03:27,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:03:27,128 INFO L85 PathProgramCache]: Analyzing trace with hash 2125577554, now seen corresponding path program 1 times [2021-11-19 05:03:27,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:03:27,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321633818] [2021-11-19 05:03:27,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:03:27,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:03:27,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:27,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:03:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:27,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:03:27,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:27,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:03:27,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:27,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-19 05:03:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:27,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-19 05:03:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:27,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-19 05:03:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:27,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-19 05:03:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:27,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-19 05:03:27,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:27,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-19 05:03:27,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:27,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-19 05:03:27,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:27,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-19 05:03:27,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:27,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-19 05:03:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:27,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-19 05:03:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:27,247 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-19 05:03:27,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:03:27,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321633818] [2021-11-19 05:03:27,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321633818] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:03:27,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:03:27,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:03:27,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447357558] [2021-11-19 05:03:27,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:03:27,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:03:27,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:03:27,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:03:27,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:03:27,251 INFO L87 Difference]: Start difference. First operand 677 states and 1103 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 05:03:28,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:03:28,367 INFO L93 Difference]: Finished difference Result 1665 states and 2780 transitions. [2021-11-19 05:03:28,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:03:28,367 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2021-11-19 05:03:28,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:03:28,378 INFO L225 Difference]: With dead ends: 1665 [2021-11-19 05:03:28,378 INFO L226 Difference]: Without dead ends: 1056 [2021-11-19 05:03:28,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:03:28,382 INFO L933 BasicCegarLoop]: 548 mSDtfsCounter, 860 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 05:03:28,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [875 Valid, 1130 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 05:03:28,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2021-11-19 05:03:28,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 977. [2021-11-19 05:03:28,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 761 states have (on average 1.5992115637319317) internal successors, (1217), 768 states have internal predecessors, (1217), 189 states have call successors, (189), 22 states have call predecessors, (189), 26 states have return successors, (220), 188 states have call predecessors, (220), 188 states have call successors, (220) [2021-11-19 05:03:28,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1626 transitions. [2021-11-19 05:03:28,470 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1626 transitions. Word has length 124 [2021-11-19 05:03:28,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:03:28,470 INFO L470 AbstractCegarLoop]: Abstraction has 977 states and 1626 transitions. [2021-11-19 05:03:28,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 05:03:28,471 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1626 transitions. [2021-11-19 05:03:28,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-19 05:03:28,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:03:28,480 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:03:28,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-19 05:03:28,481 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:03:28,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:03:28,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1685662962, now seen corresponding path program 1 times [2021-11-19 05:03:28,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:03:28,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562342557] [2021-11-19 05:03:28,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:03:28,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:03:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:28,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:03:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:28,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:03:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:28,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:03:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:28,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-19 05:03:28,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:28,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-19 05:03:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:28,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-19 05:03:28,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:28,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-19 05:03:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:28,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-19 05:03:28,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:28,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-19 05:03:28,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:28,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-19 05:03:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:28,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-19 05:03:28,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:28,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-19 05:03:28,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:28,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-19 05:03:28,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:28,588 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-19 05:03:28,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:03:28,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562342557] [2021-11-19 05:03:28,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562342557] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:03:28,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:03:28,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:03:28,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885053706] [2021-11-19 05:03:28,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:03:28,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:03:28,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:03:28,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:03:28,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:03:28,591 INFO L87 Difference]: Start difference. First operand 977 states and 1626 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 05:03:29,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:03:29,778 INFO L93 Difference]: Finished difference Result 2380 states and 4025 transitions. [2021-11-19 05:03:29,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:03:29,779 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2021-11-19 05:03:29,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:03:29,793 INFO L225 Difference]: With dead ends: 2380 [2021-11-19 05:03:29,793 INFO L226 Difference]: Without dead ends: 1524 [2021-11-19 05:03:29,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:03:29,800 INFO L933 BasicCegarLoop]: 539 mSDtfsCounter, 858 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:03:29,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [873 Valid, 1102 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 05:03:29,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2021-11-19 05:03:29,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1445. [2021-11-19 05:03:29,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1134 states have (on average 1.6084656084656084) internal successors, (1824), 1141 states have internal predecessors, (1824), 284 states have call successors, (284), 22 states have call predecessors, (284), 26 states have return successors, (315), 283 states have call predecessors, (315), 283 states have call successors, (315) [2021-11-19 05:03:29,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 2423 transitions. [2021-11-19 05:03:29,921 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 2423 transitions. Word has length 125 [2021-11-19 05:03:29,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:03:29,922 INFO L470 AbstractCegarLoop]: Abstraction has 1445 states and 2423 transitions. [2021-11-19 05:03:29,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 05:03:29,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 2423 transitions. [2021-11-19 05:03:29,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-19 05:03:29,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:03:29,935 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:03:29,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-19 05:03:29,936 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:03:29,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:03:29,936 INFO L85 PathProgramCache]: Analyzing trace with hash 187384112, now seen corresponding path program 1 times [2021-11-19 05:03:29,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:03:29,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636932077] [2021-11-19 05:03:29,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:03:29,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:03:29,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:30,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:03:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:30,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:03:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:30,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:03:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:30,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-19 05:03:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:30,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-19 05:03:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:30,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-19 05:03:30,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:30,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-19 05:03:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:30,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-19 05:03:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:30,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-19 05:03:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:30,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-19 05:03:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:30,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-19 05:03:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:30,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-19 05:03:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:30,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-19 05:03:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:30,066 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-19 05:03:30,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:03:30,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636932077] [2021-11-19 05:03:30,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636932077] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:03:30,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:03:30,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:03:30,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767997490] [2021-11-19 05:03:30,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:03:30,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:03:30,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:03:30,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:03:30,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:03:30,069 INFO L87 Difference]: Start difference. First operand 1445 states and 2423 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 05:03:31,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:03:31,136 INFO L93 Difference]: Finished difference Result 3427 states and 5866 transitions. [2021-11-19 05:03:31,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:03:31,137 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 126 [2021-11-19 05:03:31,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:03:31,158 INFO L225 Difference]: With dead ends: 3427 [2021-11-19 05:03:31,158 INFO L226 Difference]: Without dead ends: 2228 [2021-11-19 05:03:31,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:03:31,167 INFO L933 BasicCegarLoop]: 539 mSDtfsCounter, 856 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:03:31,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [871 Valid, 1102 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 05:03:31,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2021-11-19 05:03:31,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 2149. [2021-11-19 05:03:31,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 1715 states have (on average 1.6157434402332362) internal successors, (2771), 1722 states have internal predecessors, (2771), 407 states have call successors, (407), 22 states have call predecessors, (407), 26 states have return successors, (454), 406 states have call predecessors, (454), 406 states have call successors, (454) [2021-11-19 05:03:31,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3632 transitions. [2021-11-19 05:03:31,380 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3632 transitions. Word has length 126 [2021-11-19 05:03:31,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:03:31,380 INFO L470 AbstractCegarLoop]: Abstraction has 2149 states and 3632 transitions. [2021-11-19 05:03:31,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 05:03:31,381 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3632 transitions. [2021-11-19 05:03:31,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-19 05:03:31,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:03:31,396 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:03:31,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-19 05:03:31,396 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:03:31,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:03:31,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1884345073, now seen corresponding path program 1 times [2021-11-19 05:03:31,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:03:31,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877785589] [2021-11-19 05:03:31,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:03:31,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:03:31,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:31,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:03:31,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:31,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:03:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:31,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:03:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:31,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-19 05:03:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:31,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-19 05:03:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:31,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-19 05:03:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:31,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-19 05:03:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:31,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-19 05:03:31,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:31,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-19 05:03:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:31,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-19 05:03:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:31,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-19 05:03:31,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:31,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-19 05:03:31,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:31,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-19 05:03:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:31,505 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-19 05:03:31,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:03:31,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877785589] [2021-11-19 05:03:31,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877785589] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:03:31,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:03:31,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:03:31,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799652442] [2021-11-19 05:03:31,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:03:31,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:03:31,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:03:31,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:03:31,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:03:31,508 INFO L87 Difference]: Start difference. First operand 2149 states and 3632 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 05:03:32,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:03:32,638 INFO L93 Difference]: Finished difference Result 5046 states and 8720 transitions. [2021-11-19 05:03:32,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:03:32,638 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2021-11-19 05:03:32,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:03:32,668 INFO L225 Difference]: With dead ends: 5046 [2021-11-19 05:03:32,668 INFO L226 Difference]: Without dead ends: 3347 [2021-11-19 05:03:32,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:03:32,679 INFO L933 BasicCegarLoop]: 539 mSDtfsCounter, 854 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:03:32,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [869 Valid, 1102 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 05:03:32,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3347 states. [2021-11-19 05:03:32,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3347 to 3268. [2021-11-19 05:03:33,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3268 states, 2655 states have (on average 1.6203389830508474) internal successors, (4302), 2662 states have internal predecessors, (4302), 586 states have call successors, (586), 22 states have call predecessors, (586), 26 states have return successors, (659), 585 states have call predecessors, (659), 585 states have call successors, (659) [2021-11-19 05:03:33,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3268 states to 3268 states and 5547 transitions. [2021-11-19 05:03:33,019 INFO L78 Accepts]: Start accepts. Automaton has 3268 states and 5547 transitions. Word has length 127 [2021-11-19 05:03:33,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:03:33,020 INFO L470 AbstractCegarLoop]: Abstraction has 3268 states and 5547 transitions. [2021-11-19 05:03:33,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 05:03:33,020 INFO L276 IsEmpty]: Start isEmpty. Operand 3268 states and 5547 transitions. [2021-11-19 05:03:33,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-19 05:03:33,042 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:03:33,042 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:03:33,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-19 05:03:33,043 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:03:33,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:03:33,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1777285708, now seen corresponding path program 1 times [2021-11-19 05:03:33,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:03:33,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120666278] [2021-11-19 05:03:33,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:03:33,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:03:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:33,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:03:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:33,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:03:33,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:33,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:03:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:33,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-19 05:03:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:33,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-19 05:03:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:33,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-19 05:03:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:33,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-19 05:03:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:33,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-19 05:03:33,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:33,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-19 05:03:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:33,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-19 05:03:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:33,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-19 05:03:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:33,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-19 05:03:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:33,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-19 05:03:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:33,170 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-19 05:03:33,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:03:33,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120666278] [2021-11-19 05:03:33,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120666278] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:03:33,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:03:33,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:03:33,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352332657] [2021-11-19 05:03:33,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:03:33,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:03:33,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:03:33,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:03:33,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:03:33,174 INFO L87 Difference]: Start difference. First operand 3268 states and 5547 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 05:03:34,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:03:34,394 INFO L93 Difference]: Finished difference Result 7964 states and 13819 transitions. [2021-11-19 05:03:34,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:03:34,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 128 [2021-11-19 05:03:34,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:03:34,442 INFO L225 Difference]: With dead ends: 7964 [2021-11-19 05:03:34,442 INFO L226 Difference]: Without dead ends: 5378 [2021-11-19 05:03:34,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:03:34,458 INFO L933 BasicCegarLoop]: 547 mSDtfsCounter, 852 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 05:03:34,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [867 Valid, 1128 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 05:03:34,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5378 states. [2021-11-19 05:03:34,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5378 to 5299. [2021-11-19 05:03:34,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5299 states, 4310 states have (on average 1.6134570765661254) internal successors, (6954), 4317 states have internal predecessors, (6954), 962 states have call successors, (962), 22 states have call predecessors, (962), 26 states have return successors, (1079), 961 states have call predecessors, (1079), 961 states have call successors, (1079) [2021-11-19 05:03:35,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5299 states to 5299 states and 8995 transitions. [2021-11-19 05:03:35,013 INFO L78 Accepts]: Start accepts. Automaton has 5299 states and 8995 transitions. Word has length 128 [2021-11-19 05:03:35,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:03:35,014 INFO L470 AbstractCegarLoop]: Abstraction has 5299 states and 8995 transitions. [2021-11-19 05:03:35,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 05:03:35,015 INFO L276 IsEmpty]: Start isEmpty. Operand 5299 states and 8995 transitions. [2021-11-19 05:03:35,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-19 05:03:35,048 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:03:35,048 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:03:35,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-19 05:03:35,049 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:03:35,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:03:35,050 INFO L85 PathProgramCache]: Analyzing trace with hash 2047787629, now seen corresponding path program 1 times [2021-11-19 05:03:35,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:03:35,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297955467] [2021-11-19 05:03:35,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:03:35,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:03:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:35,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:03:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:35,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:03:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:35,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:03:35,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:35,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-19 05:03:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:35,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-19 05:03:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:35,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-19 05:03:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:35,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-19 05:03:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:35,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-19 05:03:35,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:35,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-19 05:03:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:35,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-19 05:03:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:35,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-19 05:03:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:35,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-19 05:03:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:35,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-19 05:03:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:35,219 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-19 05:03:35,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:03:35,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297955467] [2021-11-19 05:03:35,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297955467] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:03:35,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:03:35,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:03:35,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163510124] [2021-11-19 05:03:35,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:03:35,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:03:35,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:03:35,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:03:35,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:03:35,222 INFO L87 Difference]: Start difference. First operand 5299 states and 8995 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 05:03:36,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:03:36,617 INFO L93 Difference]: Finished difference Result 13106 states and 22728 transitions. [2021-11-19 05:03:36,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:03:36,618 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2021-11-19 05:03:36,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:03:36,704 INFO L225 Difference]: With dead ends: 13106 [2021-11-19 05:03:36,704 INFO L226 Difference]: Without dead ends: 8866 [2021-11-19 05:03:36,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:03:36,728 INFO L933 BasicCegarLoop]: 541 mSDtfsCounter, 850 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 05:03:36,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [865 Valid, 1109 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 05:03:36,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8866 states. [2021-11-19 05:03:37,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8866 to 8787. [2021-11-19 05:03:37,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8787 states, 7192 states have (on average 1.6112347052280311) internal successors, (11588), 7199 states have internal predecessors, (11588), 1568 states have call successors, (1568), 22 states have call predecessors, (1568), 26 states have return successors, (1763), 1567 states have call predecessors, (1763), 1567 states have call successors, (1763) [2021-11-19 05:03:37,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8787 states to 8787 states and 14919 transitions. [2021-11-19 05:03:37,471 INFO L78 Accepts]: Start accepts. Automaton has 8787 states and 14919 transitions. Word has length 129 [2021-11-19 05:03:37,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:03:37,471 INFO L470 AbstractCegarLoop]: Abstraction has 8787 states and 14919 transitions. [2021-11-19 05:03:37,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 05:03:37,472 INFO L276 IsEmpty]: Start isEmpty. Operand 8787 states and 14919 transitions. [2021-11-19 05:03:37,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-19 05:03:37,515 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:03:37,515 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:03:37,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-19 05:03:37,516 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:03:37,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:03:37,516 INFO L85 PathProgramCache]: Analyzing trace with hash -236287054, now seen corresponding path program 1 times [2021-11-19 05:03:37,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:03:37,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517743099] [2021-11-19 05:03:37,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:03:37,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:03:37,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:37,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:03:37,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:37,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:03:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:37,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:03:37,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:37,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-19 05:03:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:37,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-19 05:03:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:37,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-19 05:03:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:37,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-19 05:03:37,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:37,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-19 05:03:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:37,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-19 05:03:37,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:37,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-19 05:03:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:37,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-19 05:03:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:37,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-19 05:03:37,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:37,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-19 05:03:37,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:37,660 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-19 05:03:37,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:03:37,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517743099] [2021-11-19 05:03:37,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517743099] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:03:37,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:03:37,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:03:37,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570368212] [2021-11-19 05:03:37,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:03:37,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:03:37,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:03:37,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:03:37,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:03:37,665 INFO L87 Difference]: Start difference. First operand 8787 states and 14919 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 05:03:39,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:03:39,489 INFO L93 Difference]: Finished difference Result 22765 states and 39434 transitions. [2021-11-19 05:03:39,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:03:39,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 130 [2021-11-19 05:03:39,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:03:39,574 INFO L225 Difference]: With dead ends: 22765 [2021-11-19 05:03:39,575 INFO L226 Difference]: Without dead ends: 15459 [2021-11-19 05:03:39,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:03:39,612 INFO L933 BasicCegarLoop]: 554 mSDtfsCounter, 848 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 05:03:39,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [863 Valid, 1152 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 05:03:39,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15459 states. [2021-11-19 05:03:40,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15459 to 15380. [2021-11-19 05:03:40,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15380 states, 12582 states have (on average 1.6018121125417262) internal successors, (20154), 12589 states have internal predecessors, (20154), 2771 states have call successors, (2771), 22 states have call predecessors, (2771), 26 states have return successors, (3110), 2770 states have call predecessors, (3110), 2770 states have call successors, (3110) [2021-11-19 05:03:40,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15380 states to 15380 states and 26035 transitions. [2021-11-19 05:03:40,748 INFO L78 Accepts]: Start accepts. Automaton has 15380 states and 26035 transitions. Word has length 130 [2021-11-19 05:03:40,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:03:40,749 INFO L470 AbstractCegarLoop]: Abstraction has 15380 states and 26035 transitions. [2021-11-19 05:03:40,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 05:03:40,750 INFO L276 IsEmpty]: Start isEmpty. Operand 15380 states and 26035 transitions. [2021-11-19 05:03:40,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-19 05:03:40,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:03:40,812 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:03:40,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-19 05:03:40,812 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:03:40,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:03:40,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1431568180, now seen corresponding path program 1 times [2021-11-19 05:03:40,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:03:40,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547268369] [2021-11-19 05:03:40,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:03:40,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:03:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:40,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:03:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:40,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:03:40,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:40,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:03:40,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:40,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-19 05:03:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:40,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-19 05:03:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:40,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-19 05:03:40,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:40,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-19 05:03:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:40,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-19 05:03:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:40,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-19 05:03:40,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:40,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-19 05:03:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:40,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-19 05:03:40,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:40,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-19 05:03:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:40,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-19 05:03:40,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:40,954 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-19 05:03:40,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:03:40,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547268369] [2021-11-19 05:03:40,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547268369] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:03:40,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:03:40,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:03:40,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528105873] [2021-11-19 05:03:40,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:03:40,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:03:40,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:03:40,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:03:40,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:03:40,959 INFO L87 Difference]: Start difference. First operand 15380 states and 26035 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 05:03:43,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:03:43,392 INFO L93 Difference]: Finished difference Result 40721 states and 70417 transitions. [2021-11-19 05:03:43,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:03:43,392 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 131 [2021-11-19 05:03:43,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:03:43,538 INFO L225 Difference]: With dead ends: 40721 [2021-11-19 05:03:43,538 INFO L226 Difference]: Without dead ends: 27429 [2021-11-19 05:03:43,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:03:43,576 INFO L933 BasicCegarLoop]: 541 mSDtfsCounter, 846 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:03:43,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [861 Valid, 1107 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 05:03:43,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27429 states. [2021-11-19 05:03:45,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27429 to 27350. [2021-11-19 05:03:45,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27350 states, 22513 states have (on average 1.5973881757206947) internal successors, (35962), 22520 states have internal predecessors, (35962), 4810 states have call successors, (4810), 22 states have call predecessors, (4810), 26 states have return successors, (5423), 4809 states have call predecessors, (5423), 4809 states have call successors, (5423) [2021-11-19 05:03:45,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27350 states to 27350 states and 46195 transitions. [2021-11-19 05:03:45,758 INFO L78 Accepts]: Start accepts. Automaton has 27350 states and 46195 transitions. Word has length 131 [2021-11-19 05:03:45,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:03:45,759 INFO L470 AbstractCegarLoop]: Abstraction has 27350 states and 46195 transitions. [2021-11-19 05:03:45,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 05:03:45,760 INFO L276 IsEmpty]: Start isEmpty. Operand 27350 states and 46195 transitions. [2021-11-19 05:03:45,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-19 05:03:45,809 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:03:45,809 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:03:45,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-19 05:03:45,810 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:03:45,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:03:45,810 INFO L85 PathProgramCache]: Analyzing trace with hash 302873936, now seen corresponding path program 1 times [2021-11-19 05:03:45,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:03:45,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960969128] [2021-11-19 05:03:45,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:03:45,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:03:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:45,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:03:45,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:45,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:03:45,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:45,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:03:45,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:45,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-19 05:03:45,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:45,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-19 05:03:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:45,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-19 05:03:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:45,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-19 05:03:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:45,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-19 05:03:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:45,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-19 05:03:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:45,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-19 05:03:45,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:45,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-19 05:03:45,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:45,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-19 05:03:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:45,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-19 05:03:45,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:45,949 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-19 05:03:45,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:03:45,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960969128] [2021-11-19 05:03:45,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960969128] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:03:45,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:03:45,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:03:45,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959503868] [2021-11-19 05:03:45,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:03:45,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:03:45,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:03:45,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:03:45,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:03:45,952 INFO L87 Difference]: Start difference. First operand 27350 states and 46195 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 05:03:49,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:03:49,449 INFO L93 Difference]: Finished difference Result 74508 states and 128016 transitions. [2021-11-19 05:03:49,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:03:49,449 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 132 [2021-11-19 05:03:49,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:03:49,868 INFO L225 Difference]: With dead ends: 74508 [2021-11-19 05:03:49,868 INFO L226 Difference]: Without dead ends: 49978 [2021-11-19 05:03:49,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:03:49,936 INFO L933 BasicCegarLoop]: 540 mSDtfsCounter, 844 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 05:03:49,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [859 Valid, 1105 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 05:03:49,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49978 states. [2021-11-19 05:03:53,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49978 to 49899. [2021-11-19 05:03:53,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49899 states, 41347 states have (on average 1.5914818487435607) internal successors, (65803), 41354 states have internal predecessors, (65803), 8525 states have call successors, (8525), 22 states have call predecessors, (8525), 26 states have return successors, (9670), 8524 states have call predecessors, (9670), 8524 states have call successors, (9670) [2021-11-19 05:03:53,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49899 states to 49899 states and 83998 transitions. [2021-11-19 05:03:53,654 INFO L78 Accepts]: Start accepts. Automaton has 49899 states and 83998 transitions. Word has length 132 [2021-11-19 05:03:53,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:03:53,655 INFO L470 AbstractCegarLoop]: Abstraction has 49899 states and 83998 transitions. [2021-11-19 05:03:53,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 05:03:53,656 INFO L276 IsEmpty]: Start isEmpty. Operand 49899 states and 83998 transitions. [2021-11-19 05:03:53,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-19 05:03:53,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:03:53,704 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:03:53,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-19 05:03:53,704 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:03:53,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:03:53,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1926694636, now seen corresponding path program 1 times [2021-11-19 05:03:53,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:03:53,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481987044] [2021-11-19 05:03:53,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:03:53,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:03:53,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:53,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:03:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:53,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:03:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:53,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:03:53,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:53,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-19 05:03:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:53,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-19 05:03:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:53,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-19 05:03:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:53,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-19 05:03:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:53,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-19 05:03:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:53,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-19 05:03:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:53,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-19 05:03:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:53,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-19 05:03:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:53,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-19 05:03:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:53,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-19 05:03:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:03:53,841 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-19 05:03:53,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:03:53,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481987044] [2021-11-19 05:03:53,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481987044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:03:53,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:03:53,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:03:53,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269374110] [2021-11-19 05:03:53,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:03:53,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:03:53,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:03:53,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:03:53,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:03:53,844 INFO L87 Difference]: Start difference. First operand 49899 states and 83998 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 05:03:58,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:03:58,398 INFO L93 Difference]: Finished difference Result 92994 states and 160147 transitions. [2021-11-19 05:03:58,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:03:58,399 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 133 [2021-11-19 05:03:58,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:03:58,778 INFO L225 Difference]: With dead ends: 92994 [2021-11-19 05:03:58,779 INFO L226 Difference]: Without dead ends: 92822 [2021-11-19 05:03:58,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:03:58,825 INFO L933 BasicCegarLoop]: 541 mSDtfsCounter, 842 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:03:58,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [857 Valid, 1107 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 05:03:58,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92822 states. [2021-11-19 05:04:03,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92822 to 92743. [2021-11-19 05:04:03,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92743 states, 77392 states have (on average 1.5840009303287161) internal successors, (122589), 77399 states have internal predecessors, (122589), 15324 states have call successors, (15324), 22 states have call predecessors, (15324), 26 states have return successors, (17515), 15323 states have call predecessors, (17515), 15323 states have call successors, (17515) [2021-11-19 05:04:04,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92743 states to 92743 states and 155428 transitions. [2021-11-19 05:04:04,270 INFO L78 Accepts]: Start accepts. Automaton has 92743 states and 155428 transitions. Word has length 133 [2021-11-19 05:04:04,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:04:04,270 INFO L470 AbstractCegarLoop]: Abstraction has 92743 states and 155428 transitions. [2021-11-19 05:04:04,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 05:04:04,270 INFO L276 IsEmpty]: Start isEmpty. Operand 92743 states and 155428 transitions. [2021-11-19 05:04:04,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-19 05:04:04,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:04,358 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:04:04,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-19 05:04:04,358 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:04:04,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:04,359 INFO L85 PathProgramCache]: Analyzing trace with hash -2135061647, now seen corresponding path program 1 times [2021-11-19 05:04:04,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:04:04,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830589718] [2021-11-19 05:04:04,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:04,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:04:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:04,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 05:04:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:04,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-19 05:04:04,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:04,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 05:04:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:04,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-19 05:04:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:04,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-19 05:04:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:04,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-19 05:04:04,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:04,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-19 05:04:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:04,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-19 05:04:04,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:04,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-19 05:04:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:04,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-19 05:04:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:04,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-19 05:04:04,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:04,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-19 05:04:04,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:04,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-19 05:04:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:04,607 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-19 05:04:04,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:04:04,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830589718] [2021-11-19 05:04:04,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830589718] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:04:04,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:04:04,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-19 05:04:04,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314230587] [2021-11-19 05:04:04,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:04:04,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 05:04:04,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:04:04,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 05:04:04,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-11-19 05:04:04,611 INFO L87 Difference]: Start difference. First operand 92743 states and 155428 transitions. Second operand has 16 states, 15 states have (on average 6.0) internal successors, (90), 11 states have internal predecessors, (90), 6 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2021-11-19 05:04:18,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:04:18,064 INFO L93 Difference]: Finished difference Result 185252 states and 322366 transitions. [2021-11-19 05:04:18,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-19 05:04:18,065 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.0) internal successors, (90), 11 states have internal predecessors, (90), 6 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 134 [2021-11-19 05:04:18,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:04:19,236 INFO L225 Difference]: With dead ends: 185252 [2021-11-19 05:04:19,236 INFO L226 Difference]: Without dead ends: 185088 [2021-11-19 05:04:19,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=519, Invalid=1833, Unknown=0, NotChecked=0, Total=2352 [2021-11-19 05:04:19,331 INFO L933 BasicCegarLoop]: 626 mSDtfsCounter, 3396 mSDsluCounter, 2773 mSDsCounter, 0 mSdLazyCounter, 6829 mSolverCounterSat, 1461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3396 SdHoareTripleChecker+Valid, 3399 SdHoareTripleChecker+Invalid, 8290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1461 IncrementalHoareTripleChecker+Valid, 6829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:04:19,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3396 Valid, 3399 Invalid, 8290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1461 Valid, 6829 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-11-19 05:04:19,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185088 states.